Effectiveness of the pandemic H1N1 influenza vaccines against laboratory-confirmed H1N1 infections: Population-based case–control study

Effectiveness of an Indian-made Attenuated influenza A(H1N1)pdm 2009 vaccine

“…Our results are comparable to the earlier inactivated A(H1N1) pdm 2009 influenza vaccines in three case control studies which assessed effectiveness against laboratory-confirmed H1N1 infection: 73.4% effectiveness in Korea, 17 72% effectiveness in England and Scotland 18 and 86% effectiveness in Manitoba (Canada) 19 reported. A trivalent influenza vaccine for 2010 influenza season showed effectiveness of 79% in another case control study in Australia, 20 and recently, a meta-analysis of five observational studies showed the median VE to be 69% (range 60-93%) for monovalent A(H1N1)pdm 2009 vaccine.…”

“…Most studies 12,[17][18][19]24 have examined the results also for the vaccination-to-disease interval of ≥ 14 d. We looked at our results for >7, >14, or >21 d postvaccination, and found the VE to be 75.0%, 76.7%, and 78.9%. This demonstrated that the vaccine gave protection from day 7 d onwards.…”

Effectiveness of the Quadrivalent Human Papillomavirus Vaccine Against Cervical Dysplasia in Manitoba, Canada

“…Because of their completeness and accuracy, 13,14 these databases have been used extensively in postmarketing vaccines studies. [15][16][17] The study was approved by the University of Manitoba Research Ethics Board and by MH's Health Information Privacy Committee.…”

Protective effects of influenza A (H1N1) pandemic 2009 vaccination against the onset of influenza-like illness and asthma exacerbation in Japanese children

“…Kloepfer et al [16] showed that children with asthma had increased susceptibility for A(H1N1)pdm09 infection compared to children without asthma, which was concluded before widespread A(H1N1)pdm09 vaccine release to avoid confounding results with immunological effects of the virus and false positive test results resulting from use of the live virus vaccine. Although the effectiveness of A(H1N1)pdm09 vaccines are widely reported [9,10,, there are few reports that discuss the effectiveness in patients with asthma [19,44,45].…”